Table 2 Diagnostic value of CT scan for the detection of osteoporosis
Hounsfield unit | Sensitivity (percentage) | Specificity (percentage) | Positive predictive value (percentage) | Negative predictive value (percentage) |
|---|---|---|---|---|
Under 79 | 46 | 90 | 87.8 | 51.6 |
Under 93.5 | 60 | 79 | 81.7 | 55.8 |
Under 103 | 69 | 74 | 80.6 | 60.4 |
Under 113 | 86 | 64 | 78.9 | 74.5 |
Under 119 | 89 | 55 | 75.6 | 76.1 |
Under 128 | 92 | 43 | 71.6 | 77.5 |